CVE-2026-7263
⚠️ highSummary
In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, DOMNode::C14N() method may process the XML data incorrectly, causing a circular linked list in the data structure representing the XML document. This may cause subsequent processing of the XML document to enter infinite loop, causing denial of service in the processing application.
CVSS Score
7.5
High
EPSS Score
0.4
Exploit Probability
Published Date
2026-05-10
First Seen: 2026-05-11
📊 Relative Risk Intelligence
This CVE is Moderate Risk - more severe than 68.9% of all 335,187 vulnerabilities in our database.
#104,397
Above average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: May 11, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
Nikita Sveshnikov (Positive Technologies)
Ilija Tovilo (remediation reviewer)
SSVC data provided by
CISA
Last Modified
2026-06-30
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Vector 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:Amber